Crossword books are the one puzzle type software cannot finish for you — because somebody has to write the clues.
A themed crossword book needs clues. Sixty puzzles at fifteen words each is nine hundred short pieces of original writing — and they have to be right, because a wrong or clumsy clue makes the grid unsolvable and the review brutal. That wall is why the crossword corner of any store is thinner than the word search corner, despite crosswords having the better audience.
It is also why it is worth climbing. The wall keeps competitors out. And there are two honest ways over it, one of which involves writing no clues at all.
Puzzle Maker Pro is Windows desktop software that builds print-ready crossword pages from your word lists. Edition details sit on Puzzle Maker Pro editions and which edition should I get.
Two ways past the clue wall
Route one: don’t write clues. You can ship fill-in books four ways, and they suit different buyers.
- Word Fill — a standalone fill-in product: dense interlocking grids, words grouped by length, no clues. Grids draw from the built-in dictionary (no pasted custom list on this product). Choose it when you want classic fill-in pages without building themed word lists first.
- Regular Criss Cross — numbered Across/Down crossings when you write clues, or the same book in Clue Style = Word Fill when you bring your own themed word list and want length-grouped words instead of clues. Same shop page, two modes.
- Secret Word Criss Cross — the crossing grid plus a secret-answer strip or letter-hints payoff. Set Clue Style = Word Fill when you want the length-grouped bank instead of written clues and still want that reveal mechanic.
- Word Spiral — a spiral path where words do not cross; Clue Style can run written clues (default), the Word Fill bank, or scrambled answers.
Fill-in books sell steadily to solvers who like the fitting problem and dislike trivia — any of these routes is a real product, not a downgrade.
This route turns a word list into a finished product in an afternoon. If you already have themed lists from word-search work, they carry straight over.
Route two: write clues, but only where you have an edge. Clue writing gets fast when the subject is one you actually know. A book of crosswords for nurses, written by someone who has worked a ward, has clues no generalist can produce and an audience that recognises it immediately. On a niche you live in, clues come quickly; on a niche you are researching from scratch, expect much slower drafting and more fact-checking — with more risk of a clue that is subtly wrong.
Puzzle Maker Pro helps on both routes — there is a clue editor, and an AI word-list assistant that can suggest clues alongside words — but treat any suggested clue as a first draft. You are the one whose name is on the book, and a clue that is subtly wrong is worse than no clue.
The practical shape of a first product: pick a niche you belong to, build one themed list, ship it as Word Fill to get it out, then write the clue version as volume two for the same audience.
What page one has to prove
The buyer needs to know which of the three jobs this is before they commit, because a crossword solver and a fill-in solver are not the same person.
KDP interior. Amazon’s Look Inside preview shows a fixed slice off the front of the book, so keep front matter to a couple of pages and get a real puzzle in early — with its clue list or word bank visible on the same spread. That layout point is the whole sample: a grid without its clues shows the buyer nothing about the book. Watch print size on both halves; clue text runs small, and a list that is comfortable on screen can be unreadable at 6×9. Say on the how-it-works page whether the puzzles are clued or fill-in, what the theme is, and where the solutions start, since the keys sit at the back past the preview.
Etsy listing. Lead with the theme and the mode in plain words — “Fill-In Crosswords” and “Clued Crosswords” are different searches by different people, and mislabelling one as the other is a common complaint in this category. Show a full page, grid plus list, at readable size. State the count and the grid size. If you sell digital packs, our guide to selling puzzle printables on Etsy walks through pack sizes and preview images without repeating listing basics here.
Teachers and TPT. Vocabulary crosswords are a staple, and the fit is close to exact: the clue is the definition and the answer is the word, so the page doubles as a check on whether the definition landed. It is a recall check, not an assessment — a student who knows the word can still be stuck by a cryptic clue, so keep clues literal if you want it to measure vocabulary rather than wordplay. Show the page with its key, name the unit and one grade, and say plainly whether it is clued or fill-in. Fill-in versions suit younger grades and spelling practice, where the point is the letters rather than the definitions.
Your own site. A themed crossword is a strong recurring feature — a monthly puzzle on your subject, with the answers next month, aimed at the same niche your book serves. It builds the list and it demonstrates the clue quality that is the whole reason someone would buy your book instead of a generic one.
Three crossword products to choose from
Crossword here means interlocking or spiral word fills with a clue or letter-count story — not a word-search bank, and not a sudoku.
- Regular Criss Cross — Across and Down crossings with numbered clues. The same product also runs Clue Style = Word Fill, the length-grouped word bank publishers use when they want a fill-in book without writing clues.
- Secret Word Criss Cross — the same grid idea plus a secret-answer strip, or a letter-hints mode. The hidden answer gives the page a payoff beyond finishing the grid, which makes it the better gift and the better themed pack.
- Word Spiral — a sparse spiral path where words do not cross and the letter count sizes the path. Visually distinct at thumbnail size, and its Clue Style runs written clues, Word Fill, or scrambled answers.
If you are comparing word games that are not crosswords — Word Star, Word Squares, or Just Five Words — those are separate products with their own shop pages.
When to pick crossword
Pick crosswords when you have a niche you genuinely know, because your clues become a moat nobody can copy quickly. Pick them when your audience is vocabulary-driven — classrooms, professions, fandoms, hobbies. Pick them when you want a puzzle that holds someone for twenty minutes and feels friendlier than a pure logic grid.
Think twice if you have no subject-matter edge and no appetite for writing. In that case Word Fill or Spiral is the honest product for you, and it is a real product, not a consolation prize.
Other puzzles you might like
If your buyer wants a letter hunt with no crossings — find themed words hidden in a field — word search is the better fit. See our word search guide for publishers for KDP and classroom angles, or Etsy word search printables if you sell short packs.
If the pleasure is decoding a hidden message rather than filling a grid, try Easy Cryptograms for straight substitution puzzles or Box Code when you want a boxed cipher layout.
If the buyer loves placement puzzles with digits or letters under sudoku-style rules, the KDP sudoku variations guide covers Wordoku and related formats — a different audience from crossword solvers, but often the same teacher or gift buyer shopping both.
Not sure whether you are selling a book interior, a printable pack, a worksheet, or an embed? Interiors vs printables vs worksheets vs embeddable puzzles lays out how each format is bought and previewed so you pick one promise per listing.
Next step
Pick the niche you already know, then decide whether volume one is clued or Word Fill. Both are shippable this week. Before you buy, confirm which edition covers the product you picked on which edition should I get. Hosted web play is sold only on Word Fill — as Word Fill + Interactive or Word Fill Productivity + Interactive — not on Regular Criss Cross, Secret Word Criss Cross, or Word Spiral.